FitViewport gutter scrambled on MacOS

[Landei]

Hi,

I tried my game on MacOS (10.11.6), and after a resize the gutter of FitViewport contains funny artefacts:

On resize I do just the usual

Code: Select all

   
override fun resize(width: Int, height: Int) {
        viewport.update(width, height)
}


Is there a way to clean the gutter after a resize? Or should this be considered a bug?

[shatterblast]

I think there may be a thing with FitViewport on Apple stuff, but I am not sure. It may have to do with Apple's older version of OpenGL. You might consider preventing resize with your game or perhaps even a different Viewport type if you really need.

[evilentity]

Try clearing the screen with proper viewport then applying fit

[Landei]

Thanks @evilentity, using a second viewport works.

In case someone else runs into it, here are my modifications (Kotlin, sorry)

Code: Select all

private val gutterViewport = StretchViewport(Main.worldWidth, Main.worldHeight, camera)
val viewport = FitViewport(Main.worldWidth, Main.worldHeight, camera)
...
override fun resize(width: Int, height: Int) {
        gutterViewport.update(width, height) //<-- keep it updated as well
        viewport.update(width, height)
}
...
override fun render(delta: Float) {
        gutterViewport.apply()
        //draw what you need for cleanup, e.g. a black rectangle
        viewport.apply()
        //normal stuff here
}


Kinda hacky, but I'm glad it works.